Nicosia: Cypriot scientist Constantinos Charalambous is the co-author of a research article published this week in Science magazine, focusing on the reentry and disintegration dynamics of space debris monitored through seismic data.
According to Cyprus News Agency, the paper, co-authored by Benjamin Fernando and Constantinos Charalambous, highlights the increasing risks posed by reentering space debris as Earth's orbit becomes more congested. The authors note that current responses to uncontrolled reentries are limited by the challenges in reliably tracking spacecraft as they burn up in the atmosphere, leading to poorly predicted debris fallout locations.
The researchers have developed a minimum-gradient fit seismic inversion methodology that enables the quick determination of various parameters such as trajectory, speed, altitude, descent angle, size, and fragmentation pattern of debris while in the atmosphere. They tested this methodology using open-source data from the 2024 reentry of Shenzhou-15 and discovered a location significantly south of the predicted track.
The study's observations on cascading, multiplicative fragmentation provide valuable insights into debris disintegration dynamics. These findings have important implications for improving space situational awareness and enhancing debris hazard mitigation strategies.